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| author | Evan Cheng <evan.cheng@apple.com> | 2010-03-13 02:20:29 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2010-03-13 02:20:29 +0000 |
| commit | 0af20d847ac89f797d613a8a4fc3e7127ccb0b36 (patch) | |
| tree | 2a4654a1e0e71bac4b84f8ee2ad0bcae6ac150e8 /test/Transforms/InstCombine | |
| parent | bc733f54c0d344d72aadf2f925a08babfeb7ea6a (diff) | |
| download | llvm-0af20d847ac89f797d613a8a4fc3e7127ccb0b36.tar.gz llvm-0af20d847ac89f797d613a8a4fc3e7127ccb0b36.tar.bz2 llvm-0af20d847ac89f797d613a8a4fc3e7127ccb0b36.tar.xz | |
Fix a typo in ValueTracking that's causing instcombine to delete needed shift instructions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98416 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Transforms/InstCombine')
| -rw-r--r-- | test/Transforms/InstCombine/shift-sra.ll | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/test/Transforms/InstCombine/shift-sra.ll b/test/Transforms/InstCombine/shift-sra.ll index 58f322635c..a578bbe4d4 100644 --- a/test/Transforms/InstCombine/shift-sra.ll +++ b/test/Transforms/InstCombine/shift-sra.ll @@ -56,3 +56,23 @@ C: ; CHECK: %P = phi i64 ; CHECK-NEXT: ret i64 %P } + +; rdar://7732987 +define i32 @test5(i32 %Y) { + br i1 undef, label %A, label %C +A: + br i1 undef, label %B, label %D +B: + br label %D +C: + br i1 undef, label %D, label %E +D: + %P = phi i32 [0, %A], [0, %B], [%Y, %C] + %S = ashr i32 %P, 16 + ret i32 %S +; CHECK: @test5 +; CHECK: %P = phi i32 +; CHECK-NEXT: ashr i32 %P, 16 +E: + ret i32 0 +} |